﻿using Word = Microsoft.Office.Interop.Word;
using Excel = Microsoft.Office.Interop.Excel;
using PowerPoint = Microsoft.Office.Interop.PowerPoint;
using Microsoft.Office.Core;
using System.IO;
using System;
/// <summary>
/// Office2Pdf 将Office文档转化为pdf
/// </summary>
public class OfficeToPdf
{
    /// <summary>
    /// Word转换成pdf
    /// </summary>
    /// <param name="sourcePath">源文件路径</param>
    /// <param name="targetPath">目标文件路径</param>
    /// <returns>true=转换成功</returns>
    public static bool DOCConvertToPDF(string sourcePath, string targetPath)
    {
        bool result = false;
        if (File.Exists(targetPath))
        {
            result = true;
            return result;
        }
        string targetDic = Path.GetDirectoryName(targetPath);
        if (!Directory.Exists(targetDic) && targetDic != "")
        {
            Directory.CreateDirectory(targetDic);
        }
        Word.WdExportFormat exportFormat = Word.WdExportFormat.wdExportFormatPDF;
        object paramMissing = Type.Missing;
        Word.Application wordApplication = new Word.ApplicationClass();
        Word.Document wordDocument = null;
        try
        {
            object paramSourceDocPath = sourcePath;
            string paramExportFilePath = targetPath;
            Word.WdExportFormat paramExportFormat = exportFormat;
            bool paramOpenAfterExport = false;
            Word.WdExportOptimizeFor paramExportOptimizeFor = Word.WdExportOptimizeFor.wdExportOptimizeForPrint;
            Word.WdExportRange paramExportRange = Word.WdExportRange.wdExportAllDocument;
            int paramStartPage = 0;
            int paramEndPage = 0;
            Word.WdExportItem paramExportItem = Word.WdExportItem.wdExportDocumentContent;
            bool paramIncludeDocProps = true;
            bool paramKeepIRM = true;
            Word.WdExportCreateBookmarks paramCreateBookmarks = Word.WdExportCreateBookmarks.wdExportCreateWordBookmarks;
            bool paramDocStructureTags = true;
            bool paramBitmapMissingFonts = true;
            bool paramUseISO19005_1 = false;
            wordDocument = wordApplication.Documents.Open(
            ref paramSourceDocPath, ref paramMissing, ref paramMissing,
            ref paramMissing, ref paramMissing, ref paramMissing,
            ref paramMissing, ref paramMissing, ref paramMissing,
            ref paramMissing, ref paramMissing, ref paramMissing,
            ref paramMissing, ref paramMissing, ref paramMissing,
            ref paramMissing);
            if (wordDocument != null)
                wordDocument.ExportAsFixedFormat(paramExportFilePath,
                paramExportFormat, paramOpenAfterExport,
                paramExportOptimizeFor, paramExportRange, paramStartPage,
                paramEndPage, paramExportItem, paramIncludeDocProps,
                paramKeepIRM, paramCreateBookmarks, paramDocStructureTags,
                paramBitmapMissingFonts, paramUseISO19005_1,
                ref paramMissing);
            result = true;
        }
        catch (Exception ex)
        {
            result = false;
            throw new ApplicationException(ex.Message);
        }
        finally
        {
            if (wordDocument != null)
            {
                wordDocument.Close(ref paramMissing, ref paramMissing, ref paramMissing);
                wordDocument = null;
            }
            if (wordApplication != null)
            {
                wordApplication.Quit(ref paramMissing, ref paramMissing, ref paramMissing);
                wordApplication = null;
            }
            GC.Collect();
            GC.WaitForPendingFinalizers();
        }
        return result;
    }
    /// <summary>
    /// 把Excel文件转换成PDF格式文件 
    /// </summary>
    /// <param name="sourcePath">源文件路径</param>
    /// <param name="targetPath">目标文件路径</param>
    /// <returns>true=转换成功</returns>
    public static bool XLSConvertToPDF(string sourcePath, string targetPath)
    {
        bool result = false;
        if (File.Exists(targetPath))
        {
            result = true;
            return result;
        }
        string targetDic = Path.GetDirectoryName(targetPath);
        if (!Directory.Exists(targetDic))
        {
            Directory.CreateDirectory(targetDic);
        }
        Excel.XlFixedFormatType targetType = Excel.XlFixedFormatType.xlTypePDF;
        object missing = Type.Missing;
        Excel.ApplicationClass application = null;
        Excel.Workbook workBook = null;
        try
        {
            application = new Excel.ApplicationClass();
            object target = targetPath;
            object type = targetType;
            workBook = application.Workbooks.Open(sourcePath, missing, missing, missing, missing, missing,
            missing, missing, missing, missing, missing, missing, missing, missing, missing);
            workBook.ExportAsFixedFormat(targetType, target, Excel.XlFixedFormatQuality.xlQualityStandard, true, false, missing, missing, missing, missing);
            result = true;
        }
        catch (Exception ex)
        {
            result = false;
            throw new ApplicationException(ex.Message);
        }
        finally
        {
            if (workBook != null)
            {
                workBook.Close(true, missing, missing);
                workBook = null;
            }
            if (application != null)
            {
                application.Quit();
                application = null;
            }
            GC.Collect();
            GC.WaitForPendingFinalizers();
        }
        return result;
    }
    ///<summary> 
    /// 把PowerPoint文件转换成PDF格式文件 
    ///</summary> 
    ///<param name="sourcePath">源文件路径</param> 
    ///<param name="targetPath">目标文件路径</param> 
    ///<returns>true=转换成功</returns> 
    public static bool PPTConvertToPDF(string sourcePath, string targetPath)
    {
        bool result = false;
        if (File.Exists(targetPath))
        {
            result = true;
            return result;
        }
        string targetDic = Path.GetDirectoryName(targetPath);
        if (!Directory.Exists(targetDic))
        {
            Directory.CreateDirectory(targetDic);
        }
        PowerPoint.PpSaveAsFileType targetFileType = PowerPoint.PpSaveAsFileType.ppSaveAsPDF;
        object missing = Type.Missing;
        PowerPoint.ApplicationClass application = null;
        PowerPoint.Presentation persentation = null;
        try
        {
            application = new PowerPoint.ApplicationClass();
            persentation = application.Presentations.Open(sourcePath, MsoTriState.msoTrue, MsoTriState.msoFalse, MsoTriState.msoFalse); persentation.SaveAs(targetPath, targetFileType, Microsoft.Office.Core.MsoTriState.msoTrue);
            result = true;
        }
        catch (Exception ex)
        {
            result = false;
            throw new ApplicationException(ex.Message);
        }
        finally
        {
            if (persentation != null)
            {
                persentation.Close();
                persentation = null;
            }
            if (application != null)
            {
                application.Quit();
                application = null;
            }
            GC.Collect();
            GC.WaitForPendingFinalizers();
        }
        return result;
    }
}